Trailing the line of originally announced retailers that have offered up the BlackBerry PlayBook for presale is Radio Shack. They have finally made the device available for order, however currently looks to only have the 16GB version for $499. You won't get it any earlier than the 19th, so if you already ordered elswhere no need to cancel in favor of The Shack. As to why they only have one version available we're not quite sure. Hit the link below for more.